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Deferred Policy Acquisition Costs - Progression of deferred policy acquisition costs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |  |
Deferred policy acquisition costs and present value of future profits, beginning balance |  | $ 1,203 | $ 1,582 | $ 1,682 | $ 1,216
Deferred policy acquisition costs and present value of future profits, additions |  | 232 | 247 | 734 | 718
Deferred policy acquisition costs and present value of future profits, periodic amortization |  | (227) | (236) | (622) | (699)
Deferred policy acquisition costs and present value of future profits, annuity unlocking |  | (77) |  | (77) | 29
Deferred policy acquisition costs and present value of future profits, change included in realized gains |  | 3 | 3 | 6 | 9
Deferred policy acquisition costs and present value of future profits, foreign currency translation |  | (1) | 0 | (1) | (1)
Deferred policy acquisition costs and present value of future profits, change in unrealized |  | (169) | 73 | (758) | 397
Deferred policy acquisition costs and present value of future profits, ending balance |  | 964 | 1,669 | 964 | 1,669
P&C |  |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |  |
Deferred policy acquisition costs, beginning balance |  | 330 | 298 | 299 | 270
Deferred policy acquisition costs, additions |  | 188 | 181 | 569 | 524
Deferred policy acquisition costs, periodic amortization |  | (194) | (171) | (544) | (485)
Deferred policy acquisition costs, foreign currency translation |  | (1) | 0 | (1) | (1)
Deferred policy acquisition costs, ending balance |  | 323 | 308 | 323 | 308
Annuity and Other |  |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |  |
Deferred policy acquisition costs, beginning balance |  | 1,373 | 1,243 | 1,285 | 1,217
Deferred policy acquisition costs, additions |  | 43 | 65 | 163 | 192
Deferred policy acquisition costs, periodic amortization |  | (29) | (58) | (63) | (193)
Deferred policy acquisition costs, annuity unlocking |  | (76) |  | (76) | 28
Deferred policy acquisition costs, change included in realized gains |  | 3 | 3 | 5 | 9
Deferred policy acquisition costs, ending balance |  | 1,314 | 1,253 | 1,314 | 1,253
Movement in Deferred Sales Inducements [Roll Forward] |  |  |  |  |
Deferred sales inducements, beginning balance |  | 81 | 94 | 86 | 102
Deferred sales inducements, additions |  | 1 | 1 | 2 | 2
Deferred sales inducements, periodic amortization |  | (3) | (5) | (10) | (15)
Deferred sales inducements, annuity unlocking |  | (1) |  | (1) | 1
Deferred sales inducements, change included in realized gains |  | 0 | 0 | 1 | 0
Deferred sales inducements, ending balance |  | 78 | 90 | 78 | 90
Movement in Present Value of Future Insurance Profits [Roll Forward] |  |  |  |  |
Present value of future profits, beginning balance |  | 38 | 45 | 42 | 49
Present value of future profits, periodic amortization |  | (1) | (2) | (5) | (6)
Present value of future profits, annuity unlocking |  | 0 |  | 0 | 0
Present value of future profits, ending balance |  | 37 | 43 | 37 | 43
Movement in Unrealized Gains (Losses) Related to Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |  |
Unrealized investment gains (losses), beginning balance | [1] | (619) | (98) | (30) | (422)
Unrealized investment gains (losses), change in unrealized | [1] | (169) | 73 | (758) | 397
Unrealized investment gains (losses), ending balance | [1] | (788) | (25) | (788) | (25)
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |  |
Deferred policy acquisition costs and present value of future profits, beginning balance |  | 873 | 1,284 | 1,383 | 946
Deferred policy acquisition costs and present value of future profits, additions |  | 44 | 66 | 165 | 194
Deferred policy acquisition costs and present value of future profits, periodic amortization |  | (33) | (65) | (78) | (214)
Deferred policy acquisition costs and present value of future profits, annuity unlocking |  | (77) |  | (77) | 29
Deferred policy acquisition costs and present value of future profits, change included in realized gains |  | 3 | 3 | 6 | 9
Deferred policy acquisition costs and present value of future profits, change in unrealized |  | (169) | 73 | (758) | 397
Deferred policy acquisition costs and present value of future profits, ending balance |  | 641 | 1,361 | 641 | 1,361
Excluding Unrealized Gains | Annuity and Other |  |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |  |
Deferred policy acquisition costs and present value of future profits, beginning balance |  | 1,492 | 1,382 | 1,413 | 1,368
Deferred policy acquisition costs and present value of future profits, change in unrealized |  | 0 | 0 | 0 | 0
Deferred policy acquisition costs and present value of future profits, ending balance |  | $ 1,429 | $ 1,386 | $ 1,429 | $ 1,386
[1] | Adjustments to DPAC related to net unrealized gains/losses on securities and cash flow hedges.

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